I don't understand why MC keeps pink haired girl as his wife. She spend time with him in order to make him into slave (or just to kill him). After they broke up, she constantly abused him.
Sure, they do have chemistry but I just hate that author writes as if past doesn't exist.
And his reward isn't really reward. He has no need for money. That position would only consume his time.
I fail to understand why Monarch would punish MC for what he did.